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5. Thermodynamics and thermochemistry — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry5. Thermodynamics and thermochemistry1 Mark
MCQ
Amongst the following statements, that which was not proposed by Dalton was
  • A
    all the atoms of a given element have identical properties including identical mass. Atoms of different elements differ in mass
  • B
    chemical reactions involve reorganisation of atoms. These are neither created nor destroyed in a chemical reaction.
  • ✓
    when gases combine or reproduced in a chemical reaction they do so in a simple ratio by volume provided all gases are at the same $T$ and $P.$
  • D
    matter consists of indivisible atoms.
✓

Answer

Correct option: C.
when gases combine or reproduced in a chemical reaction they do so in a simple ratio by volume provided all gases are at the same $T$ and $P.$
c
according to Gaylussac's law of volume combination when gases combine or reproduced in a chemical reaction they do so in a simple ratio by volume provided all gases are at the same $T$ and $P.$

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